I'm purchasing a two-channel Audiosource Amp 3 to run my Polk RTi70. I am currently running all of the speakers through my 100W x 5 Sherwood receiver. I'll be connecting the pre-amp out for the front channels from the Sherwood to the Amp 3. The Amp 3 has both A & B speakers posts. Two questions:
1) Anyone owns the Audiosource Amp 3? How is this amp?
2) Can I bi-wire the Polk RTi70 to both A & B speaker posts of the Amp 3? Would the bi-wiring to the Amp 3 degrade or upgrade the sound of the 70?